HW25 - Thevalingam, Donald – Homework 25 – Due: Apr 3...

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Unformatted text preview: Thevalingam, Donald – Homework 25 – Due: Apr 3 2007, midnight – Inst: Eslami 1 This print-out should have 10 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. The due time is Central time. 001 (part 1 of 1) 10 points A force of 2080 N is needed to bring a car moving at 25 . 2 m / s to a halt in 18 . 3 s. What is the mass of the car? Answer in units of kg. 002 (part 1 of 1) 10 points Small rockets are used to make small adjust- ments in the speed of satellites. One such rocket has a thrust of 46 N. If it is fired to change the velocity of a(n) 82000 kg space craft by 66 cm / s, how long should it be fired? Answer in units of s. 003 (part 1 of 2) 10 points A revolutionary war cannon, with a mass of 2120 kg, fires a 22 . 5 kg ball horizontally. The cannonball has a speed of 116 m / s after it has left the barrel. The cannon carriage is on a flat platform and is free to roll horizontally....
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This note was uploaded on 04/05/2010 for the course PHY 52033 taught by Professor Tleva during the Spring '10 term at University of Texas.

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